Before running Ansible on coreos nodes Make sure to have Python interpreter for Ansible
git clone https://github.com/rajeshwer/python-coreos.git
cd python-coreos
chmod +x coreos-python.sh
./coreos-python.sh
export PATH=$PATH:/opt/bin
Git clone https://github.com/rajeshwer/Kubernetes-ansible.git
chmod +x kubernetesTLS.sh
./kubernetesTLS.sh
ssh into one of master node and set path fo KUBECTL bin file
PATH=/opt/local/bin:$PATH;export PATH
Check if the nodes are registerd
core@coreos01 ~ $ sudo kubectl get nodes
NAME STATUS AGE
10.10.191.15 Ready,SchedulingDisabled 4h
10.10.191.16 Ready 4h
10.10.191.17 Ready 4h
your kubernetes single node cluster is set up on coreos